New rules will be introduced from May 2018 categorizing them Dangerous, Major and minor. First two will result in MOT failure and minor will be added under advisory notes. All this is irrelevant to me though as I try to keep car in prestine condition. What makes me worrying is dpf removal as it will result in straight failure as well. Now how are we going to get around this especially all stage 2+ owners. Rant over!!!